Dell OptiPlex Gs Reference And Installation Manual

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Dell OptiPlex Gs Reference And Installation Manual Manual pdf 62 page image

5-4 Dell OptiPlex Gs and Gs+ Low-Profile Systems Reference and Installation GuideReplacing the Expansion-Card CageUse the following procedure to replace the expansion-card cage:1. With the securing lever in the upright position,align the slots in the left side of the expansion-card cage with the tabs on the left side of thechassis (see Figure 5-4). Then lower theexpansion-card cage into place.2. Rotate the securing lever downward until it isflush with the top of the chassis. Make sure theriser board is fully seated in the RISER connectoron the system board.3. Reconnect any cables you removed in step 2 of theprevious procedure, “Removing the Expansion-Card Cage.”Inside Your ComputerFigure 5-5 shows an overhead view of your computer tohelp you orient yourself when installing hardwareoptions. Unless otherwise specified, locations or direc-tions relative to the computer are as shown.Figure 5-5. Computer Orientation ViewFigure 5-6 shows your computer with its cover removed.Refer to this illustration to locate interior features andcomponents discussed in this guide.When you look inside your computer, note the direct cur-rent (DC) power cables coming from the power supply.These cables supply power to the system board; to inter-nal diskette drives, hard-disk drives, and tape drives; andto certain expansion cards that connect to externalperipherals.The flat ribbon cable in Figure 5-6 is typical of theinterface cables for internal drives. An interface cableconnects a drive to a connector on the system board or onan expansion card.The system board—the large printed circuit board at thebottom of the chassis—holds the computer’s control cir-cuitry and other electronic components. Some hardwareoptions are installed directly onto the system board.During an installation procedure, you may be required tochange a jumper setting on the system board, and/or ajumper or switch setting on an expansion card or on adrive. Jumpers and switches provide a convenient andreversible way of reconfiguring the circuitry on a printedcircuit board. For information on jumpers and switches,see the next two subsections, “Jumpers” and “Switches.”Jumpersrightsideleftsidefront of computerexternallyaccessibledrive bayspowersupplyhard-diskdriveexpansion-card cageback of computersystemboardCAUTION: Make sure your system is turned offbefore you change a jumper setting. Otherwise,damage to your system or unpredictable resultsmay occur.Jumpers are small blocks on a circuitboard with two or more pinsemerging from them.Plastic plugs containing a wire fitdown over the pins. The wire connectsthe pins and creates a circuit.To change a jumper setting, pull the plugoff its pin(s) and carefully fit it down ontothe pin(s) indicated.93816BK0.BK : 93816c50.frm Page 4 Monday, September 16, 1996 1:21 PM